diff --git a/api/core/workflow/nodes/agent/clarification_helper.py b/api/core/workflow/nodes/agent/clarification_helper.py
index 90c1c313fb..0debf19f47 100644
--- a/api/core/workflow/nodes/agent/clarification_helper.py
+++ b/api/core/workflow/nodes/agent/clarification_helper.py
@@ -27,7 +27,7 @@ def should_enable_clarification(node_data: AgentNodeData) -> bool:
 
 
 def extract_clarification_request(
-    agent_output: dict[str, Any],
+    _agent_output: dict[str, Any],
     enable_clarification: bool,
 ) -> dict[str, Any] | None:
     """
@@ -37,7 +37,7 @@ def extract_clarification_request(
     Currently returns None as clarification is not yet implemented.
 
     Args:
-        agent_output: The output from agent execution.
+        _agent_output: The output from agent execution. Currently unused, reserved for future HITL expansion.
         enable_clarification: Whether clarification is enabled.
 
     Returns:
diff --git a/api/tests/unit_tests/core/workflow/nodes/agent/test_clarification_helper.py b/api/tests/unit_tests/core/workflow/nodes/agent/test_clarification_helper.py
index cad5c0997f..9c5a44adf9 100644
--- a/api/tests/unit_tests/core/workflow/nodes/agent/test_clarification_helper.py
+++ b/api/tests/unit_tests/core/workflow/nodes/agent/test_clarification_helper.py
@@ -2,6 +2,8 @@
 Tests for agent node clarification helper and configuration.
 """
 
+import pytest
+
 from core.workflow.nodes.agent.clarification_helper import (
     extract_clarification_request,
     should_enable_clarification,
@@ -10,51 +12,47 @@ from core.workflow.nodes.agent.entities import AgentNodeData
 from dify_graph.enums import NodeType
 
 
+@pytest.fixture
+def base_node_data_args() -> dict:
+    """Fixture providing base arguments for AgentNodeData construction."""
+    return {
+        "id": "test_node",
+        "type": NodeType.AGENT,
+        "agent_strategy_provider_name": "test_provider",
+        "agent_strategy_name": "test_strategy",
+        "agent_strategy_label": "Test Strategy",
+        "agent_parameters": {},
+    }
+
+
 class TestClarificationHelper:
     """Test suite for clarification helper functions."""
 
-    def test_should_enable_clarification_when_enabled(self):
+    def test_should_enable_clarification_when_enabled(self, base_node_data_args):
         """Test that should_enable_clarification returns True when enabled."""
         node_data = AgentNodeData(
-            id="test_node",
-            type=NodeType.AGENT,
-            agent_strategy_provider_name="test_provider",
-            agent_strategy_name="test_strategy",
-            agent_strategy_label="Test Strategy",
-            agent_parameters={},
+            **base_node_data_args,
             enable_human_clarification=True,
         )
         assert should_enable_clarification(node_data) is True
 
-    def test_should_enable_clarification_when_disabled(self):
+    def test_should_enable_clarification_when_disabled(self, base_node_data_args):
         """Test that should_enable_clarification returns False when disabled."""
         node_data = AgentNodeData(
-            id="test_node",
-            type=NodeType.AGENT,
-            agent_strategy_provider_name="test_provider",
-            agent_strategy_name="test_strategy",
-            agent_strategy_label="Test Strategy",
-            agent_parameters={},
+            **base_node_data_args,
             enable_human_clarification=False,
         )
         assert should_enable_clarification(node_data) is False
 
-    def test_should_enable_clarification_default_false(self):
+    def test_should_enable_clarification_default_false(self, base_node_data_args):
         """Test that clarification is disabled by default."""
-        node_data = AgentNodeData(
-            id="test_node",
-            type=NodeType.AGENT,
-            agent_strategy_provider_name="test_provider",
-            agent_strategy_name="test_strategy",
-            agent_strategy_label="Test Strategy",
-            agent_parameters={},
-        )
+        node_data = AgentNodeData(**base_node_data_args)
         assert should_enable_clarification(node_data) is False
 
     def test_extract_clarification_request_when_disabled(self):
         """Test that extract_clarification_request returns None when disabled."""
         result = extract_clarification_request(
-            agent_output={"text": "test output"},
+            _agent_output={"text": "test output"},
             enable_clarification=False,
         )
         assert result is None
@@ -63,31 +61,22 @@ class TestClarificationHelper:
         """Test that extract_clarification_request returns None when enabled (placeholder)."""
         # Currently returns None as placeholder for future implementation
         result = extract_clarification_request(
-            agent_output={"text": "test output"},
+            _agent_output={"text": "test output"},
             enable_clarification=True,
         )
         assert result is None
 
-    def test_agent_node_data_with_clarification_field(self):
+    def test_agent_node_data_with_clarification_field(self, base_node_data_args):
         """Test that AgentNodeData properly stores enable_human_clarification."""
         node_data = AgentNodeData(
-            id="test_node",
-            type=NodeType.AGENT,
-            agent_strategy_provider_name="test_provider",
-            agent_strategy_name="test_strategy",
-            agent_strategy_label="Test Strategy",
-            agent_parameters={},
+            **base_node_data_args,
             enable_human_clarification=True,
         )
         assert node_data.enable_human_clarification is True
 
         node_data_disabled = AgentNodeData(
-            id="test_node",
-            type=NodeType.AGENT,
-            agent_strategy_provider_name="test_provider",
-            agent_strategy_name="test_strategy",
-            agent_strategy_label="Test Strategy",
-            agent_parameters={},
+            **base_node_data_args,
             enable_human_clarification=False,
         )
         assert node_data_disabled.enable_human_clarification is False
+